2 Corinthians 7:8-9; 2 Corinthians 7:12-13

8For though I made you sorry with my letter, I do not regret it, though I did regret it. For I see that my letter made you sorry, though just for a while.9I now rejoice, not that you were made sorry, but that you were made sorry to repentance. For you were made sorry in a godly way, that you might suffer loss by us in nothing.

12So although I wrote to you, I wrote not for his cause that did the wrong, nor for his cause that suffered the wrong, but that your earnest care for us might be revealed in you in the sight of God.13Therefore we have been comforted. In our comfort we rejoiced the more exceedingly for the joy of Titus, because his spirit has been refreshed by you all.